Water-heater.



J. H. LONSKEY J. S. MOGARTHY.

WATER HEATER. APPLICATION FILED JUNE 16, 1911.

1,100,662, Patented June 16,1914.

2 SHEETS-SHEET 1.

J. H. LONSKEY & J. S. MOGARTHY. WATER HEATER. APPLICATION FILED JUNE 16,1911.

1,100,662, Patented June 16,1914.

2 SHEETS-SHEET 2.

I fnassses In re fol 8 W Z r70): 72. J2- lansle COLUMBIA PLANOURAPHC0..WA5HINOTON, D. C.

umrrnn STATES PATENT oFmoE.

JOHN H. LONSKEY AND JOHN S. MCCARTHY, OF DETROIT, MICHIGAN.

WATER-HEATER.

To all whom it may concern:

Be it known that we, JOHN H. LONSKEY and JOHN S. MoGAR'rI-IY, citizensof the United States of America, residing at Detroit, in the county ofWVayne and State of Michigan, have invented certain new and usefulImprovements in Water-Heaters, of which the following is aspecification, reference being had therein to the accompanying drawing.

The invention relates to water heaters of that type in which the liquidis passed through a coil arranged within a jacket in proximity to acombustion heater and is connected at its upper and lower endsrespectively with the hot water delivery and water supply connections.

It is one of the objects of the present invention to provide morecomplete access to this coil for purpose of cleaning, further to obtaina construction in which clogging of the coil and the consequent burningout of the same is avoided, and further to obtain an advantageousdistribution of the heating surface.

With these objects in view the invention consists in various features ofconstruction as hereinafter set forth.

In the drawings, Figure 1 is a plan view of the heater; Fig. 2 is anelevation partly in section through the middle of the jacket; Fig. 3 isa horizontal section showing the heating coil; and Figs. 4: and 5 arerespectively a horizontal section and a front elevation of theconnection between the coil,

the jacket, and the external water pipes.

In the present state of the art, in the construction of water heaters ofthe coil type, it is common to increase the amount of heating surfaceand distribution of the same by arranging a plurality of coils connectedin multiple to the external circulating pipes. With such constructionsif a stoppage occurs in one of the coils a free path for circulation isstill permitted through another coil, and consequently the chocked coilis very liable to be burned out. TVith the present construction we avoidthis objection by using a single coil and at the same time theconstruction of this coil is such as to afford just as advantageous adistribution of the heating surface as in the multiple coilconstructions. As shown more particularly in Figs. 2 and 3, A is thecoil which is a compound or complex, of a plurality of coils in serieswith each other. These .are prefer- Specification of Letters Patent.

Application filed June 16, 1911.

Patented June 16, 1914.

Serial No. 633,570.

ably arranged in groups within the outer casing or jacket Band as shownthere are three of these groups indicated respectively at G, D and E. Ineach group there is a complete circular convolution which then passes toa corresponding convolution in a second group and so on through theentire number of groups after which it returns to the first for a secondconvolution of a similar character. Thus in the entire coil the heatingsurface is so distributed as to be exposed to the flame and products ofcom bustion from the burner, without any mate rial shielding effect ofone coil or convolution by another.

A further feature of our invention is the construction of the jacket bywhich access may be obtained to the coil for removing dust and otherwisecleaning. Heretofore, it has been customary to form jackets for coilswith a door that can be opened to obtain access to the coil, and in manycon structions this door constitutes one third or more of the section ofthe case. Vith our improved construction, two opposed doors are arrangedso that both may be opened and together they constitute the greater partof the case, there being only a sufiicient stationary part to form thedoor mountings, and a support for the coil.

In detail,'F is a frame composed of opposite side members and top memberwhich forms an arch about the coil. This frame is connected at its lowerend to the burner G and also has connected thereto the opposite doorsections H and I whichv together therewith complete the case or jacket.These door sections are hinged at one edge to one of the side members ofthe frame and at their opposite edges overlap the opposite side memberof the frame to which they are secured by a suitable latch J. Thuswhenever it is desired to clean the coil by opening the doors H and I,almost the entire coil is exposed and the cleaning brush may be passedthrough from one side to the other.

For securing the coil to the frame F so as to form a rigid mechanicalsupport and also a water tight connection with the external pipe system,we have devised the following construction: K are slots formed in theframe F which permit of engaging the end portions L of the coiltherewith. M is a nipple into which the end L of the coil is passed,said end portion having a flared part L engaging a corresponding seat inthe nipple. This nipple M is provided with flanges N which are bolted atO to the frame. P is another nipple having a threaded engagement withthe nipple M and a corresponding tapered hearing which braces the flaredportion of the pipe L against the seat on the nipple M and forms awater-tight joint. Thus by the construction described, the coil may besecured to the frame and a water-tight oint formed with the nipple P towhich the external pipe connections are attached.

Another advantage of the construction just described is that itfacilitates repairs, where leaks occur in the coil. Thus it is a wellknown fact that the points in the coil first to give away are near theterminals, doubt-less due to the fact that the stress of expansion andcontraction are concentrated in this location. \Vith our construction,if a leak occurs adjacent to the end of the coil the nipple P may beremoved and the coil pipe drawn outward so as to cut-off the (lefectiveportion. The end of the tube may then be flared and clamped by thenipple P against the conical seat in the nipple M, which will againrender the construction water-tight.

What we claim as our invention is:

In a water heater a single heating coil having the successiveconvolutions thereof arranged with their axes staggered in relation toeach other, and arranged in groups with the axes of portions of eachgroup in series with those of other groups.

In testimony whereof we al'lix our signatures in presence of twowitnesses.

JOHN H. LUNSKEY. JOHN S. McGAR'll-IY.

lVitnesses JAMES P. BARRY, W. J. BELKNAP.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

